Selvage yarn winding



March 29, 1966 J. c. GAULDING SELVAGE YARN WINDING 5 Sheets-Sheet 1Filed March 12, 1962 FIGS ' INVENTOR. JASPER C Gama/H DY I @2451ATTORNEY J. DI Mmh 29, 1966 C GAUL NG SELVAGE YARN WINDING arm, 26m MFiled March 12, 1962 A TTORNEYS' M h 29, 19 J. GAULDING 3,242,550

SELVAGE YARN WINDING Filed March 12, 1962 3 Sheets-Sheet 3 INVENTOR.iasPE/e C GAULD/IYG BY A TTORNE YS United States Patent 3,242,550SELVAGE YARN WENDING Jasper Q. Gauiding, Hogansviiie, Ga, assignor toCallaway Midis Company, La Grange, 6a., a corporation of Georgia FiledMar. 12, 1962, Ser. No. 178,985 12 Claims. (Cl. 28-33) This inventionrelates to selvage yarn winding and more particularly to a wound packageof selvage yarns for shuttleless looms and methods of and apparatus forwinding such packages concurrently with a warp beaming operation.

One of the great advances in the art of weaving fabrics has been thedeveiopment of the shuttleless loom. An example of a shuttleless loom isdisclosed in Budzyna et al. Patent No. 2,694,123. Shuttleless looms ofthis type operate at high speeds and produce fabrics of good quality.

In such a shuttleless loom the yarn supply for the weft or fillingthreads is stationary and filling thread carriers traverse the shedrapidly carrying the filling. The weft or filling thread is inserted inthe form of U-shaped or connected pairs of picks. One of the picks ofeach pair is inserted from one side through a shed and the other pick ofthe pair is inserted in the adjacent shed. These U-shaped or connectedpicks are sometimes described as hair pins.

When the filling threads are inserted in this manner, the selvage at oneside of the fabric is perfect with no protruding ends, but ends offilling protrude from the opposite side of the fabric and there is noselvage structure there. This presents some difficulties in the makingof certain types of fabrics, and, where the expense can be justified, itis possible to equip the loom with mechanisms for avoiding or minimizinthe unfinished appearance of an edge of the fabric. However, for manypurposes the selvageless edge of the fabric can be given adequatestructural integrity by simply applying increased tension during weavingto the last few warp yarns adjacent that edge. When these yarns, hereinreferred to as selvage yarns, are woven under high tension, they gripthe end portions or the filling threads and hold them securely in placein the fabric.

An effective way to control the tension of the selvage yarns is todispense them from a yarn package which is separate from the warp beam.The tensions of the selvage yarns and the main body of warp yarns thenmay be regulated independently. One procedure that has been proposed forproviding selvage yarn packages is to use plied yarns and to wind themon a selvage bobbin in an operation entirely separate from the warpbeaming operation. This is not entirely satisfactory, because it isunnecessarily expensive and because it does not permit the use of sizedselvage yarns comparable to the main body of warp yarns. Anotherprocedure that has been proposed is to run unplied (singles) selvageyarns through a conventional slasher with the main body of warp yarnsand then to wind the sized selvage yarns on a bobbin at the same timethat the main body of warp yarns is being wound onto a loom beam. Thisprocedure is economical and it assures that the selvage yarns will havebeen treated in the same manner as the main body of warp yarns.

However, ditficulties have been encountered in forming satisfactoryselvage yarn packages. In order to be useful, such packages must possessa high degree of uniformity and must permit the selvage yarns to bedrawn into the loom under uniform tensions.

It is an object of this invention to provide an improved yarn packagethat will satisfy the requirements explained 3,242,550 Patented Mar. 29,1966 above and to provide reliable and economical methods of andapparatus for making such packages.

It is another object of this invention to provide an apparatus forwinding selvage yarns concurrently with warp yarns delivered from aconventional slasher.

It is a further object of this invention to provide an apparatus forwinding selvage yarns under uniform tension.

It is a still further object to provide an apparatus for winding aselvage yarn package of a plurality of selvage yarns in which eachcourse is level.

These objects are accomplished in accordance with a preferred embodimentof the invention by an auxiliary winding mechanism which is adapted tobe mounted over the delivery roll of a conventional slasher. The selvagebobbin is driven by a friction roll which contacts the yarn-carryingsurface of the bobbin. A drive roller rides on the delivery roll anddrives the friction roll to wind the selvage yarns at the speed of themain body of warp threads. A traverse bar reciprocates in a frame towind a plurality, preferably four, of selvage yarns simultaneously onthe bobbin. The traverse mechanism is arranged to wind each yarn in alevel course which over laps the adjacent yarns slightly at oppositeends of the stroke of the traverse bar. A tension arm is provided toresist displacement of the bobbin away from the friction roller. Theauxiliary winding mechanism winds 21 firm package of selvage yarns whichhas a flat, level profile along its entire length so that a constanttension can be applied by the loom as the selvage yarns are drawn offthe bobbin.

This preferred embodiment of the invention is il lustrate-d in theaccompanying drawings, in which:

FIGURE 1 is a schematic view, partly in elevation and partly in crosssection, of the delivery end of a conventional slasher on which ismounted the auxiliary winding mechanism of this invention;

FIGURE 2 is a side elevational View of the winding mechanism;

FIGURE 3 is a front elevational view of the winding mechanism as seenfrom the right of FIGURE 2;

FIGURE 4 is a top plan view of the winding mechanism and portions of thedelivery end of a conventional slasher;

FIGURE 5 is a side elevational view showing the side of the windingmechanism opposite that shown in FIG- URE 2;

FIGURE 6 is a rear elevational view of the winding mechanism mounted Onthe slasher, with portions of the slasher frame broken away;

FIGURE 7 is an enlarged cross-sectional view of the winding mechanismalong the line 7-7 in FIGURE 6; and

FIGURE 8 is a diagrammatic view of the traverse bar mechanism and a yarnpackage formed on the winding mechanism of this invention.

In FIGURE 1 the reference numeral 2 designates generally the yarntreating and drying portion of a conventional slasher, which need not bedescribed in detail here. A driven delivery rod 4 and idler rollers 6and 8 are located in front of the section 2 for conveying size-d warpyarns 10 to a warp beam 12.. The auxiliary winding mechanism of thisinvention, indicated generally at 14, is secured to a crossbar 16 on theframe of the slasher and rides on the delivery roll 4.

The auxiliary winding mechanism, as shown in FIG- URES 2 to 6, isprovided with side walls 18 and 20 which are secured together by bars 22and 24. At the base of the winding mechanism 14 a drive roll 26 ismounted on a shaft 2a which extends between the side walls 18 and 20.The drive roll 26 rides on the delivery roll 4 and the roller 26 is freeto rotate as it is driven by the delivery roll. The mechanism 14 ismaintained in an upright position by braces 30' and 32 which are securedto the side Walls 18 and 20, respectively. The end of each brace 30 and32 is attached to brackets 34 and 36 which are clamped to the crossbar16. One end of the crossbar is secured in a frame member 38 and theopposite end is secured in a corresponding member on the opposite sideof the slasher. The braces 3t) and 32 maintain the winding mechanism 14in alignment with the axis of the delivery roll 4. The weight of themechanism 14 is suflicient to maintain the drive roll 26 in contact withthe delivery roll 4.

The wrap yarns It), after being treaded in the slasher portion 2, passthrough a comb 4t) which maintains the yarns substantially in alignment.Selvage yarns 42, as shown in FIGURE 4, pass through the comb 40adjacent the edge of the warp threads 10. A spacer bar 44 is mounted onthe crossbar 16 above the warp threads 19 by brackets 46 at oppositesides of the slasher and guides the selvage yarns 42 into the windingmechanism.

The selvage yarns 42 pass under the spacer bar 44 and through eyelets 48secured in a plate 59 which is mounted on a movable traverse rod 52. Thethreads are then wound on a bobbin 54. The bobbin 54 is in the form of acylinder 55 with circular rims or heads 56 at opposite ends.

The bobbin 54 is rotated by a friction drum 58 mounted on a shaft 60extending between the side walls 13 and 20. A pulley 62 is secured toone end of the shaft 66 in vertical alignment with a pulley 64 securedto the shaft 28. A belt 66 extending over the pulleys 62 and 64 forms adriving connection between the driven roller 26 and the friction drum58. The speed ratio between the driven roller 26 and the friction drum58 is adjusted so that the lineal surface speed of the drum is slightlygreater than the surface speed of the warp delivery roll 4, so as toassure that the selvage yarns 42 will be wound tightly on the bobbin 54to form a firm yarn package.

All four of the selvage yarns 42 are wound on a common bobbin 54. Theselvage yarns are wound simultaneously on the bobbin 54 by a traversemechanism to permit the maximum amount of yarn to be wound on a bobbinof limited diameter. The traversing mechanism is driven from the shaft60 by means of a worm 66 which is secured on the end of the shaft 60. Aworm gear 68 is mounted for rotation on a bracket 69 which is secured toan extends outwardly from the side wall 18 in position to be engaged bythe worm 66. A heartshaped cam 7% is secured to the worm gear 68 andaccordingly is rotated by the shaft 64) through the worm 66. A camfollower 72 is secured to the end of the traverse rod 52 and a spring74, which is connected between the side wall 20 and the traverse rod 52,urges the follower 72 into contact with the cam 70. A guide bar 73 issecured to the traverse rod 52 and a stationary rod '75, which issecured to the side wall 18 extends through a hole in the bar 73 toprovide lateral support for the free end of the traverse rod 52. The cam79 imparts a substantially uniform reciprocating motion to the guideplate 50 and causes quick reversal of the direction of movement of theplate 50 at the ends of its path of travel.

The bobbin 54 is supported on the drum 58 by arms 76 and 78. The pivotarms 76 and 78 are journaled in brackets 82 and 84, respectively, whichare secured to the side walls 18 and 20. A tube 80 extends between thepivot arms 76 and 78 and is secured at each end to the respective arm tomaintain the bobbin parallel to the axis of the friction drum 58.Fittings 86 and 88 on the arms 76 and '78, respectively, detachablysupport in a conventional manner a removable shaft 89 upon which thehollow bobbin 54 rotates. The rims 56 extend between the respective sidewall and the drum 58. While selvage yarns are being wound on the bobbin54, the core diameter of the bobbin increases. The pivot arms --i 76 and78 permit the expanding bobbin to rise as the selvage yarns are beingwound.

The winding of selvage yarns 42 onto the bobbin 54 takes place at highspeeds and the bobbin 54 must rotate rapidly. This results in a tendencyof the bobbin 54 to bounce and bobble with respect to the friction drum58, causing undesirable variations in the tension of the selvage yarnsin the yarn package. To prevent rapid and uncontrolled oscillation ofthe bobbin 54, restraining means are provided. A friction block 9tpreferably made of nylon, is secured to the end of the arm 76. Thisblock 94} is provided with a channel 91 (FIGURE 6) for receiving atension arm 22 pivotally mounted on the side wall 18 by a bolt 94. Thefree end of the arm 92 is in the form of an arch having a radius ofcurvature which is slightly shorter than the pivot arms 76 and '78, sothat when the friction block 99 moves outwardly along the arm 92, thearm is pivoted clockwise, as viewed in FIG. 2, about the bolt 94. Atension spring 96 connected to wall 18 and to the arm 92 resistsclockwise movement of the arm 92 about the pivot bolt 94.

Relative motion between the friction block and the arm 92 is resisted byfriction between these parts, and the effective frictional force is ofcourse a function of the contact pressure between the block so and thearm 92. The contact pressure is established initially by the spring 96,but, thereafter, movements of the friction block 90 result in dragforces that beneficially affect con tact pressure. In this connection,attention is directed to the distinctive location of the pivot bolt 94for the arm 92 at a point below and to the side of the block 90 oppositethat engaged by the arm 92. With this arrangement, the drag forcescreated during upward movement of the block 90 relative to the arm 92serve to increase the contact pressure between these parts, but the dragforces created during downward movement of the block 90 serve todecrease the contact pressure. A stabilizing effect results, andbouncing of the bobbin 54 during high speed winding operations isprevented.

Traverse winding of a single thread usually produces a yarn packagewhich has a curved profile. The diame ter of the package is considerablysmaller on the ends of the bobbin than it is along the intermediateportion of the package. If a plurality of yarns are wound next to eachother on the same bobbin, the same variations in diameter would occurand the profile of the yarn package would show considerable variationsof diameter along the length of the spool, the smallest diametersoccuring at the junctions of the zones occupied by adjacent yarns. Abobbin wound in this pattern cannot be used for dispensing selvage yarnsin a shuttleless loom, since the tension of the yarns passing to theloom must be uniform and constant. The tension of the yarns iscontrolled by applying a braking torque to the selvage bobbin as theyarns are unwound by the delivery means of the loom. Since the torque onthe bobbin is proportional to the distance between the yarn and thecenter of the bobbin, an uneven yarn profile will cause the tension inthe yarn to increase and then decrease as the yarn is unwound andtraverses from one side of the other. This variation in tension isintolerable in high speed shuttleless looms, since the shed is verysmall, and if the selvage yarns sag, they are likely to be snagged andbroken by the filling carrier as it enters the shed.

In order to provide a yarn package of a plurality of selvage yarns inwhich the package has a straight and level profile, special attentionmust be given to the end portions of the zones occupied by the severalyarns on bobbin. The heart-shaped cam 70, through its quick reversingaction, prevents the building up of excessive quantities of thread atthe ends of the zones, but this alone is not sufficient to take care ofthe juncture line between zones. Hence, this invention provides for aslight overlap during winding of the selvage yarns. Referring to FIGURES7 and 8, the selvage yarns 42 from the slasher pass through eyelets 48in the guide plate 50 mounted on the traverse rod 52. The selvage yarnsthen pass between the bobbin 54 and the friction drum 58, as shown inFIG. 7. By rotating the bobbin at the point that the yarns are wound onthe bobbin, the tension in the selvage yarns is constant and does notdepend on the radial distance between the center of the bobbin and theyarn. The cam 70 is arranged to move the traverse rod through a distancewhich is slightly more than one quarter of the length of the bobbin 54for each half revolution of the cam. The extreme right-hand movement isshown in solid lines and the extreme lefthand movement is shown inphantom lines in FIGURE 8. The overlap is somewhat exaggerated in thisview for the purpose of illustration. The extent of overlap depends onthe size of the yarns being used, and it has been found in practice thatan overlap of approximately two thread diameters is sufiicient toprovide a uniform yarn package. The eyelets 48 and the cam 70 guide theoutside selvage threads beyond the ends of the bobbin in the extremeposition of the guide plate St The rims 56 guide the yarns to theextreme ends of the yarn package to fill in voids which would cause thediameter of the package to decrease at the ends. Thus, the rims 56ensure the formation of a yarn package which is level at both ends. Apartially wound yarn package is illustrated in FIGURES 3, 4 and 6. Theyarn is exaggerated in size to show the arrangement of four adjacenttraverse wound yarns. It will be seen from the profiles of these yarnpackages, however, that the diameter of each course of thread issubstantially constant along the length of the spool.

In conventional shuttleless looms, it is customary to use six selvageyarns for holding the protruding ends of the filling yarns. It has beenfound that due to the improved tension control which is possible with alevel wound bobbin, only four selvage yarns from a package produced inaccordance with this invention are sufficient to hold the protrudingends. Consequently, fifty percent longer lengths of selvage yarns can bewound on the same size bobbin as on the conventional six-yarn package.This reduces the down time of the loorn and the slasher by one thirdover that required with six selvage yarns.

The production of selvage yarn packages along with warp yarns on theslasher ties the available quantities of selvage yarn packages to thewarp beams which are produced simultaneously. Usually three packages offourstrand selvage yarn are required for each warp beam. It isimportant, therefore, that the yarn packages be of consistently goodquality since it would be costly to have to throw away a poorly woundselvage yarn package. The auxiliary winding mechanism of this inventionconsistently winds 21 selvage yarn package which is tightly wound, inwhich the threads are under a constant tension and which has a levelprofile for uniform tension control during let ofi.

While the invention has been illustrated and described in oneembodiment, it is recognized that variations and changes may be madetherein without departing from the invention as set forth in the claims.

I claim:

1. In a slasher of the type having apparatus for treating warp yarns andfor beaming the treated warp yarns, an auxiliary winding mechanism forwinding a plurality of selvage yarns on a bobbin comprising an auxiliaryframe, means mounting the frame on the slasher, means for rotatablymounting a bobbin on the frame, means for rotating the bobbin to windthe selvage yarns thereon, guide means mounted for reciprocationlongitudinally of the bobbin an having longitudinally spaced elementsfor guiding individual ones of said selvage yarns passing to the bobbin,and means for longitudinally reciprocating said guide means over adistance slightly greater than the distance between adjacent ones ofsaid elements.

2. In a slasher of the type having apparatus for treating warp yarns andfor beaming the treated warp yarns, an auxiliary winding mechanism forwinding a plurality of selvage yarns on a bobbin comprising an auxiliaryframe, means mounting the frame on the slasher, means for rotatablymounting a bobbin on the frame, means for rotating the bobbin to windthe selvage yarns thereon, guide means mounted for reciprocationlongitudinally of the bobbin and having longitudinally spaced elementsfor guiding individual ones of said selvage yarns passing to the bobbin,and means including a heart-shaped cam for longitudinally reciprocatingsaid guide means over a distance slightly greater than the distancebetween adjacent ones of said elements.

3. In a slasher of the type having apparatus for treating warp yarns andfor beaming the treated warp yarns, an auxiliary winding mechanism forwinding a plurality of selvage yarns from the slasher on a bobbincomprising an auxiliary frame, means mounting the frame on the slasher,means for rotatably mounting a bobbin on the frame, means for rotatingthe bobbin, a traverse plate having eyelets therein each adapted toreceive one of the selvage yarns, and means for reciprocating the platethrough a distance greater than the proportionate length of the bobbinfor each selvage yarn to wind successive courses of yarns, whereby theopposite ends of each course of yarn are at substantially the sameradial distance from the center of the bobbin as are the intermediateportions of said course of yarn.

4. In a slasher of the type having apparatus for treating warp yarns andfor beaming the treated warp yarns, an auxiliary winding mechanism forwinding a plurality of selvage yarns from the slasher on a bobbincomprising an auxiliary frame, means mounting the frame on the slasher,means for rotatably mounting a bobbin on the frame, means for rotatingthe bobbin, a traverse plate having eyelets therein each adapted toreceive one of the selvage yarns, and means including a hearts-shapedcam for reciprocating the plate through a distance greater than theproportionate length of the bobbin for each selvage yarn to windsuccessive courses of yarns, whereby the opposite ends of each course ofyarn are at substantially the same radial distance from the center ofthe bobbin as are the intermediate portions of said course of yarn.

5. Auxiliary winding apparatus for winding selvage yarns separately fromwarp yarns after treatment in a slasher of the type having a treatmentchamber, a delivery roll and warp beaming appartus comprising a frame,means for supporting the frame, a drive roller on the frame inengagement with the delivery roll, a friction drum mounted for rotationin the frame, means forming a driving connection between the driveroller and the friction drum for driving the friction drum at a surfacespeed slightly greater than the surface speed of said delivery roll,means mounting a bobbin in engagement with the drum for rotationthereby, and means for guiding selvage yarns between the bobbin and thedrum whereby they are wound at substantially the same rate as the warpyarns and under substantial tension.

6. Auxiliary winding apparatus for winding selvage yarns separately fromwarp yarns after treatment in a slasher of the type having a treatmentchamber, a delivery roll and warp beaming apparatus comprising a frame,means for supporting the frame, a drive roller on the frame inengagement with the delivery roll, a friction drum mounted for rotationin the frame, means forming a driving connection between the driveroller and the friction drum for driving the friction drum at a surfacespeed slightly greater than the surface speed of said delivery roll,means mounting a bobbin in engagement with the drum for rotationthereby, means for guiding selvage yarns from the slasher to the bobbinand means for yieldably urging the bobbin against the drum whereby theyarns are wound under constant tension.

7. Auxiliary winding apparatus for winding selvage yarns separately fromwarp yarns after treatment in a slasher of the type having a treatmentchamber, a delivery roll and Warp beaming apparatus comprising a frame,means for supporting the frame, a drive roller on the frame inengagement with the delivery roll, a friction drum mounted for rotationin the frame, means forming a driving connection between the driveroller and the friction drum, a pair of arms mounted on the frame forswinging movement, means on said arms for rotatably mounting a bobbin inposition to contact said drum, one of said arms having a friction blocksecured thereto, a tension arm having one end pivotally mounted on theframe and having its free end portion in engagement with the frictionblock, said free end portion having a radius of curva ture less than thelength of the friction block arms, and means for yieldably resistingpivoting movement of the tension arm.

8. Auxiliary winding apparatus for winding selvage yarns separately fromwarp yarns after treatment in a slasher of the type having a treatmentchamber, a delivery roll and warp beaming apparatus comprising a frame,means for supporting the frame, a drive roller on the frame inengagement with the delivery roll, a friction drum mounted for rotationin the frame, means forming a driving connection between the driveroller and the friction drum, means mounted on the frame for swingingmovement, means on said last-mentioned means for rotatably mounting abobbin in position to rest on said drum, one of said arms having afriction block secured thereto, an arm having one end pivotally mountedon the frame and having its free end portion in engagement with thefriction block, said arm being mounted for pivotal movement about anaxis located below said friction block and laterally beyond the side ofthe friction block opposite from the side contacted by the free endportion of said arm, and means for yieldably urging said arm againstsaid friction block.

9. In high speed winding apparatus having a frame, a driven roll on saidframe, and means for movably mounting a rotatable bobbin on said frameso that its yarn-receiving surface rests against said driven roll, theimprovement which comprises a first friction member mounted for bodilymovement with said bobbin, and a second friction member contacting saidfirst friction member and being mounted for swinging movement relativeto said frame about an axis located below said first friction member andlaterally beyond the side of said first friction member opposite fromthe side contacted by said second friction member.

10. Winding apparatus comprising a frame, a horizontal driven roll onsaid frame, arm means mounted on said frame for vertical swingingmovement for rotatably supporting a bobbin in position for theyarn-receiving portion of the bobbin to rest upon and be driven by saiddriven roll, means for guiding yarn to said bobbin, a nylon block onsaid arm means remote from the axis of swinging movement thereof, saidblock having a vertical groove in the face thereof remote from the pivotaxis of said arm means, a member having one end portion pivoted on saidframe at a location below said block and laterally beyond said block ina direction toward the pivot axis of said arm means and having its otherend portion extending through said groove in said block, said other endportion of said member being curved in a vertical plane and having aradius of curvature no greater than the radius of swinging movement ofsaid block about the pivot axis of said arm means, and spring means forurging said other end portion of said member into contact with saidblock.

11. Auxiliary winding apparatus for winding selvage yarns separatelyfrom warp yarns after treatment in a slasher of the type having atreatment chamber, a delivery roll and warp beaming apparatus comprisinga frame, means for supporting the frame, a bobbin mounted for rotationon the frame, means forming a driving connection between the deliveryroll and the bobbin, means for guiding selvage yarns to the bobbin andmeans for reciprocating the guiding means through a distance greaterthan the proportionate length of the bobbin for each selvage yarns tospirally wind the yarns on the bobbin, said reciprocating means beingdriven by the bobbin driving means.

12. In apparatus for winding a plurality of first yarns on a beam of thetype wherein the beam is rotated and the first yarns are fed alongadjacent paths past and in engagement with a delivery roll and thence tothe beam and wherein the rotation of the beam will simultaneously takeup the first yarns and wherein said delivery roll is rotated as saidyarns are passed by it, the combination therewith of an auxiliarywinding mechanism including a rotatable bobbin, a friction drum drivenfrom said delivery roll for engaging the periphery of said bobbin torotate said bobbin, and means for guiding yarn to said bobbin fortake-up around the periphery of said bobbin when said bobbin is rotatedby said friction drum.

References Cited by the Examiner UNITED STATES PATENTS 450,259 4/1891Simon 28-33 585,878 7/1897 Schaum 2833 592,592 10/1897 Morse 242l66630,611 8/1899 Knapp 2833 653,832 7/1900 Tymeson et al. 242166 719,3301/1903 Hansen 24235.5 1,586,767 6/1926 Abbott 2837 2,345,538 3/ 1944Lewis 242--42 2,635,820 4/1953 Cochran 242-18 2,694,848 11/1954 Chaya28--32 2,946,526 7/1960 Kuroiwa et al. 242-18 FOREIGN PATENTS 781,6843/1935 France. 165,941 7/ 1921 Great Britain.

DONALD W. PARKER, Primary Examiner.

RUSSELL C. MADER, Examiner.

I. PETRAKES, Assistant Examiner.

1. IN A SLASHER OF THE TYPE HAVING APPARATUS FOR TREATING WARP YARNS AND FOR BEAMING THE TREATED WARP YARNS, AND AUXILIARY WINDING MECHANISM FOR WINDING A PLURALITY OF SELVAGE YARNS ON A BOBBIN COMPRISING AN AUXILIARY FRAME, MEANS MOUNTING THE FRAME ON THE SLASHER, MEANS FOR ROTATABLY MOUNTING A BOBBIN ON THE FRAME, MEANS FOR ROTATING THE BOBBIN TO WIND THE SELVAGE YARNS THEREON, GUIDE MEANS MOUNTED FOR RECIPROCATION LONGITUDINALLY OF THE BOBBIN AN HAVING LONGITUDINALLY SPACED ELEMENTS FOR GUIDING INDIVIDUAL ONES OF SAID SELVAGE YARNS PASSING TO THE BOBBIN, AND MEANS FOR LONGITUDINALLY RECIPROCATING SAID GUIDE MEANS OVER A DISTANCE SLIGHTLY GREATER THAN THE DISTANCE BETWEEN ADJACENT ONES OF SAID ELEMENTS. 